Actual effect of refrigeration factors on refrigerant flow noise

The noise of the compressor mainly comes from the compressor's own operation, and the refrigerant flow noise comes from the various refrigeration components and refrigeration pipelines. Compared with the compressor, the noise refrigerant flow noise is less than 6dB, which can only be measured after special treatment. For this part of the noise, we designed a special test bench for the experimental study of refrigerant flow noise.

Since the refrigerant flow noise is closely related to the flow of the two-phase flow, the mechanism is very complicated. In theory, we can only study the various refrigeration factors that cause the refrigerant flow noise from the qualitative point of view, and then study the various refrigeration factors through specific experiments. The actual impact of refrigerant flow noise. Mainly flow sounding and boiling sound, this sound forms secondary radiation through the tube wall.

The conclusions obtained from the experiments are more likely to provide a direct basis for engineering practice. In order to study in detail the factors affecting the refrigerant flow noise of the refrigerator, the following preparatory work and experimental research were carried out: (1) establishing a comprehensive test system capable of measuring the refrigerant flow noise; (2) the influence of the cooling environment temperature on the refrigerant flow noise; 3) The influence of compressor inlet and exhaust pressure on refrigerant flow noise; (4) the influence of refrigerant perfusion lining refrigerant flow noise; (5) the relationship between refrigerant noise and running time.

Due to the combined action of the compressor and the capillary, the high pressure in the condenser can be maintained, and the low pressure is maintained in the evaporator. When the refrigerant flows from the high pressure condenser through the capillary to the low pressure evaporator, it will vaporize at the capillary end and the evaporator. Draw heat to achieve the purpose of refrigeration. The refrigerant is circulated in the refrigeration system under the driving of the compressor, and the cooling function is completed by the phase change.